How to hook up a FPSS
On a standard NX wet kit 1 wire to ground and the other wire to white relay wire (terminal 85) 
The FPSS has to tee into the fuel line and it has 2 electrical connections. It is just a switch that operates by fuel pressure.

The FPSS has to tee into the fuel line and it has 2 electrical connections. It is just a switch that operates by fuel pressure.

